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Abundances of s-elements in Extragalactic Carbon Stars

Published online by Cambridge University Press:  23 December 2005

P. de Laverny ,
C. Abia ,
I. Domínguez ,
B. Plez ,
O. Straniero ,
R. Wahlin ,
K. Eriksson  and
U.G. Jørgensen
P. de Laverny
Affiliation:
Observatoire de la Côote d'Azur, Dpt. Cassiopée (UMR 6202), Nice, France email: laverny@obs-nice.fr
C. Abia
Affiliation:
Dpto. Física Teórica y del Cosmos, Universidad de Granada, Spain
I. Domínguez
Affiliation:
Dpto. Física Teórica y del Cosmos, Universidad de Granada, Spain
B. Plez
Affiliation:
GRAAL, Université Montpellier II, France
O. Straniero
Affiliation:
INAF-Osservatorio di Collurania, Teramo, Italy
R. Wahlin
Affiliation:
Department of Astronomy and Space Physics, Uppsala University, Sweden
K. Eriksson
Affiliation:
Department of Astronomy and Space Physics, Uppsala University, Sweden
U.G. Jørgensen
Affiliation:
Niels Bohr Institute, Astronomical Observatory, Denmark
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Abstract

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Carbon stars found in the Small Magellanic Cloud and the Sagittarius Dwarf Spheroidal galaxy have been chemically analysed. We found that the abundance ratios derived between elements belonging to the first and the second s-process abundance peaks agree remarkably well with the theoretical predictions of low mass metal-poor AGB nucleosynthesis models. Together with their estimated luminosities, their derived abundances and their carbon isotopic ratio we speculate on the evolutionary status of these carbon stars.

Keywords

Stars: carbonstars: abundancesgalaxies: abundancesnuclear reactionsnucleosynthesisabundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S228: From Lithium to Uranium: Elemental Tracers of Early Cosmic Evolution , May 2005 , pp. 533 - 534
Copyright
© 2005 International Astronomical Union